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| Number | Title | Issue Date |
| 7551732 | Centralized voice over IP recording and retrieval method and apparatus The present subject matter is directed to an apparatus and methodology for recording, at a central data center, telephone conversations originating from remote locations. The present subject matter has particular utility to the penal (corrections) environment in tha... | 06/23/2009 |
| 7403766 | Telecommunication call management and monitoring system with voiceprint verification Disclosed is a secure telephone call management system for authenticating users of a telephone system in an institutional facility. Authentication of the users is accomplished by using a personal identification number, preferably in conjunction with speaker independ... | 07/22/2008 |
| 7249156 | Method of providing a file transfer service through a mobile communication network A method is provided for determining whether to transfer an audio, video, or text data file, requested to be transferred through a mobile station, based on a specified transfer condition and/or file size, and transferring the data file to a destined mobile terminal ... | 07/24/2007 |
| 7164757 | Methods and apparatus to manage collect phone calling limits Methods and apparatus to manage collect phone calling limits are disclosed. A disclosed example method comprises: determining if collect calls from one or more predetermined locations to a terminating phone number have exceeded a collect calls limit; and determining... | 01/16/2007 |
| 7106843 | Computer-based method and apparatus for controlling, monitoring, recording and reporting telephone access A method and apparatus for managing institutional telephone activity utilizing a computer-based telephony management unit to connect institutional telephones with outside telephone lines. The unit provides institutional users with fully automated, direct dial and co... | 09/12/2006 |
| 6633632 | Method and apparatus for detecting the number of speakers on a call An apparatus and method for detecting the number of speakers participating in a call having a speaker counting device that is connected with a network for monitoring calls placed over the network. The speaker counting device samples a call to determine th... | 10/14/2003 |
| 6418212 | Telephone fraud detection and prevention A system and method for detecting and preventing a fraudulent telephone call in telecommunication system is provided. First, a terminating number of a first call and a originating number of a second call are received from a telecommunication network. The ... | 07/09/2002 |
| 5996106 | Multi bank test mode for memory devices A multiple bank memory device is described which can be tested by accessing the multiple memory banks simultaneously. The memory includes a test mode trigger which initiates a test which writes and reads from memory cells located in different memory banks... | 11/30/1999 |
| 5469493 | Telephone call saving system and method for an integrated service digital network A call saving system for an ISDN telephone switching system includes a subscriber switching unit and terminal units connected to the subscriber switching unit via subscriber lines. A control device controls an overall call saving process executed between ... | 11/21/1995 |
| 5452295 | Call disconnection method and exchange executing the same in ATM network In a call disconnection method and a system for executing the same in an ATM (Asynchronous Transfer Mode) network, a plurality of timers are provided corresponding to each call in an exchange of an ATM network. A connected call is detected, and a data cel... | 09/19/1995 |
| 4748657 | Handset actuated signal intercept A handset actuated signal intercept circuit is located in a telephone central office and connected to the tip and ring leads of a telephone subscriber line. The signal intercept is operated from central office subscriber line power, but draws so small a c... | 05/31/1988 |
| 4645880 | Disconnect circuit for use between telephone switching systems A disconnect circuit for use between two switching systems. An optical coupler monitors open and closed current loop conditions and provides signals representative thereof. Monostable multivibrators are operated in response to these signals to provide tim... | 02/24/1987 |
| 4443663 | Filtering of port data in a switching system employing interactive processors A central office telephone switching system including two interactive processors, including a call control processor that controls calls by establishing sequences of call progression states, and a port event processor that controls the ports and transmits... | 04/17/1984 |
| 4017691 | Number translator A number translator which includes a memory system for storing directory and equipment numbers as well as other subscriber data has a digit store for storing data received from a register prior to its being passed on to the memory system, a register sende... | 04/12/1977 |
